MAX6461MAX6466 19-2533 Rev 2 12/05 Ultra-Low-Power Voltage Detectors and P Supervisory Circuits General Description Features The MAX6461MAX6466 family of ultra-low-power voltage Ultra-Low 1.0A Supply Current detectors and P reset supervisory circuits monitors bat- Preset Thresholds from +1.6V to +5.5V in 100mV tery, power-supply, and system voltages. Each circuit Increments includes a precision bandgap reference, a comparator, Internal 5% Threshold Hysteresis internally trimmed resistor networks that set specified trip thresholds, and an internal 5% threshold hysteresis circuit 2.5% Threshold Accuracy Over Temperature (see the Functional Diagram). Output is asserted when Internal Timeout Period Option (150ms min) V falls below the internal V and remains asserted CC TH- until V rises above V + (V + = V - 1.05). These CC TH TH TH Immune to Short Voltage Transients devices provide excellent circuit reliability and low cost No External Components by eliminating external components and adjustments Available in Three Output Options: Push-Pull when monitoring nominal system voltages from +1.6V to (Active Low/Active High) and Open Drain (Active +5.5V. The MAX6461/MAX6462/MAX6463 are voltage Low) detectors with a propagation delay of 17s. The MAX6464/MAX6465/MAX6466 are P supervisory Fully Specified from -40C to +125C circuits with a minimum reset timeout period of 150ms. All Small SC70 and SOT23 Packages devices are available with thresholds from +1.6V to +5.5V Ordering Information in 100mV increments. The family is available with three output stage options: PART TEMP RANGE PIN-PACKAGE push-pull with active-low output, push-pull with active- MAX6461XR -T -40C to +125C 3 SC70-3 high output, and open drain with active-low output. These MAX6461UR -T -40C to +125C 3 SOT23-3 devices are available in SC70 and SOT23 packages MAX6461UK -T -40C to +125C 5 SOT23-5 specified over the -40C to +125C temperature range. MAX6462XR -T -40C to +125C 3 SC70-3 Applications MAX6462UR -T -40C to +125C 3 SOT23-3 MAX6462UK -T -40C to +125C 5 SOT23-5 Precision Battery Monitoring The MAX6461MAX6466 are available in factory-set thresholds Load Switching/Power Sequencing from 1.6V to 5.5V in approximately 100mV increments. Choose Power-Supply Monitoring in Digital/Analog the desired voltage threshold suffix from Table 1 and insert it in the blank spaces in the part number. There are 30 standard ver- Systems sions with a required order increment of 2500 pieces. Sample Noise-Immune P Reset Circuits stock generally is held on the standard versions only (Table 2). Nonstandard versions require a 10k-piece order increment. Portable/Battery-Powered Equipment Contact factory for availability. All devices available in tape-and- Cellular Phones/Cordless Phones reel only. Devices are available in both leaded and lead-free packaging. PDAs Specify lead-free by replacing -T with +T when ordering. Portable Medical Devices Ordering Information continued at end of data sheet. Selector Guide appears at end of data sheet. Pin Configurations TOP VIEW GND 1 N.C. 15V (OUT)/OUT 1 CC 3V 3V MAX6461 CC MAX6461 CC MAX6461 GND 2 MAX6466 MAX6466 MAX6466 (OUT)/OUT 2 GND 2 GND34 (OUT)/OUT SC70-3 SOT23-3 ( ) ARE FOR THE MAX6462/MAX6465 ONLY SOT23-5 Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.Ultra-Low-Power Voltage Detectors and P Supervisory Circuits ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND unless otherwise noted.) Operating Temperature Range .........................-40C to +125C V , Open-Drain OUT..............................................-0.3V to +7V Junction Temperature......................................................+150C CC Push-Pull OUT/OUT....................................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C CC Input/Output Current (all pins) ............................................20mA Lead Temperature (soldering, 10s) .................................+300C Output Short Circuit (V or GND) CC Continuous Power Dissipation (T = +70C) A 3-Pin SC70 (derate 2.9mW/C above +70C)...........228.6mW 3-Pin SOT23 (derate 4.0mW/C above +70C)............320mW 5-Pin SOT23 (derate 7.1mW/C above +70C)............571mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +1.2V to +6V, T = -40C to +125C. Typical values are at T = +25C, unless otherwise noted.) (Note1) CC A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS T = 0C to +125C 1 6 A Operating Voltage Range V V CC T = -40C to 0C 1.2 6.0 A V = 3.6V, T = -40C to +125C, CC A 12 no load, output not asserted V = 5.0V, T = -40C to +85C, CC A V Supply Current I 1.3 2.5 A CC CC no load, output not asserted V = 5.0V, T = +85C to +125C, CC A 3.5 no load, output not asserted (V +) (V +) TH TH V rising, T = +25C V + CC A TH 0.985 1.015 V + TH (V +) (V +) TH TH V rising, T = -40C to +125C CC A 0.975 1.025 Voltage Threshold V (Note 2) (V -) (V -) TH TH V falling, T = +25C V - CC A TH 0.985 1.015 V - TH (V -) (V -) TH TH V falling, T = -40C to +125C CC A 0.975 1.025 Voltage Threshold Hysteresis V V = (V +) - (V -) / (V -) 100% 3 4.5 6 % HYST HYST TH TH TH V falling at 10mV/s from CC 17 (V -) + 100mV to (V -) - 100mV TH TH Propagation Delay t s P V rising at 10mV/s MAX6461/ CC from (V +) - 100mV to MAX6462/ 100 TH (V +) + 100mV MAX6463 only TH Startup Time 225 s (MAX6461/MAX6462/MAX6463) Output Timeout Period t 150 260 430 ms RP (MAX6464/MAX6465/MAX6466) 2 MAX6461MAX6466